.

Radar Antenna

Description

A new generation of S-band Doppler weather radar antenna and S-band 8.5m diameter Doppler weather radar antenna were produced more than 100 sets totally, and C-band 8.5m diameter dual-polarization weather radar antenna is also available.

Weather radar antenna

Performance index of antenna servo system in S band with single polarization.

Series No.

Item

Performance requirements

1

Aperture

8.5m

2

Working frequency

2.70GHz~3.00GHz

3

Beam width

≤0.99°

4

Gain

≥44.5dB

5

Polarization mode

·Horizontal line polarization

6

First sidelobe level

≤-29dB;wide angle sidelobe:±2°~10°:located below -29dB~-38dBconnection line;±10~90°:≤-42dB

7

Voltage to standing wave radio

≤1.45

8

Rotation range

360° continuous rotation; pitch -1° to +90° continuous rotation.

9

Rotation speed

Azimuth 0°~36°/s; pitch 0°~36°/s.

10

Speed accuracy

Azimuth, pitch ≤±5%

11

Angle acceleration/decelerationspeed

Position, pitch: 15°/S2~19°/S2

12

Position error

Azimuth and pitch ≤±0.1o

Airborne X band radar antenna

Performance index

Series No

Item

Indicator capacity

1

Working frequency

X band

2

Beam forming range

Pitch 45° cosecant squared

3

Polarization

vertical

4

Gain

≥ 23dB

5

Sidelobe level

≤ -20dB

6

Antenna weight

≤ 10Kg

7

Antenna volume

≤400mm×600mm×60mm

8

Working temperature

-55℃~75℃



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